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7-Eth-oxy-4'-methoxy-isoflavone (monoethyl-formononetin).

ABSTRACT: The title compound, C(18)H(16)O(4), is composed of a benzopyran-one core with a 4-methoxy-phenyl subsituent in the 3-position and an additional eth-oxy group in the 7-position. The benzopyran-one ring is not coplanar with the benzene ring, the dihedral angle between them being 41.76?(7)°. The meth-oxy and eth-oxy substituents are nearly coplanar with the ring systems to which they are attached. Individual mol-ecules are linked by two kinds of inter-molecular hydrogen bonds into chains containing classical R(2) (2)(8) rings. The chains are further assembled by aromatic F-tape and T-tape stacking inter-actions and additional inter-molecular hydrogen bonding to give a two-dimensional network.

SUBMITTER: Wang QY

PROVIDER: S-EPMC2961316 | biostudies-literature | 2008 Apr

REPOSITORIES: biostudies-literature

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7-Eth-oxy-4'-methoxy-isoflavone (monoethyl-formononetin).

Wang Qiu-Ya QY

Acta crystallographica. Section E, Structure reports online 20080423 Pt 5

The title compound, C(18)H(16)O(4), is composed of a benzopyran-one core with a 4-methoxy-phenyl subsituent in the 3-position and an additional eth-oxy group in the 7-position. The benzopyran-one ring is not coplanar with the benzene ring, the dihedral angle between them being 41.76 (7)°. The meth-oxy and eth-oxy substituents are nearly coplanar with the ring systems to which they are attached. Individual mol-ecules are linked by two kinds of inter-molecular hydrogen bonds into chains containing ...[more]

PMID: 21202376

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